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3 years ago

write an equivalent expression for 2x+2 using distributive property and write an equivalent expression for 2(2x+5)

1 answer:

3 0

(1+1)x+1 and 4x+10

Explanation

I distributed the 2 to form a new equation and I put together the distributed equation in the second one to form a new one,

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Which expression is equivalent to( 9x^2+2x-7)(-4)

Masteriza [31]

Answer:

I'm pretty sure its B. (9x2+2x-7)(x)+(9x2+2x-7)(-4)

Because its just splitting up the (x-4) and if you add the answers together then you get the same answer as the original

Step-by-step explanation:

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Find the area of the rectangle ABCD. I need both green and grey box please.

Kitty [74]

Answer:

180

Step-by-step explanation:

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Subtract: (4n + 7) - (7n - 8)

Furkat [3]

4n+7−(7n−8)

=4n+7+−1(7n−8)

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3 years ago

Consider the first five steps of the derivation of the Quadratic Formula.

lara31 [8.8K]

Answer:

Full proof below

Step-by-step explanation:

$\displaystyle ax^2+bx+c=0\\\\ax^2+bx=-c\\\\x^2+\biggr(\frac{b}{a}\biggr)x=-\frac{c}{a}\\\\x^2+\biggr(\frac{b}{a}\biggr)x+\biggr(\frac{b}{2a}\biggr)^2=-\frac{c}{a}+\biggr(\frac{b}{2a}\biggr)^2\\\\x^2+\biggr(\frac{b}{a}\biggr)x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}\\ \\\biggr(x+\frac{b}{2a}\biggr)^2=-\frac{4ac}{4a^2}+\frac{b^2}{4a^2}\\ \\\biggr(x+\frac{b}{2a}\biggr)^2=\frac{b^2-4ac}{4a^2}\\ \\x+\frac{b}{2a}=\pm\frac{\sqrt{b^2-4ac}}{2a}\\ \\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

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1 year ago

What is the value of the expression below? 2[3(42+1)]-23

s2008m [1.1K]

Answer:

235

Step-by-step explanation:

42+1

3 times 43

129

129 times 2

258

258-23

235

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3 years ago

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write an equivalent expression for 2x+2 using distributive property and write an equivalent expression for 2(2x+5)​

write an equivalent expression for 2x+2 using distributive property and write an equivalent expression for 2(2x+5)